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- The sum of seven numbers is 235.
Question 1:
The sum of seven numbers is 235. The average of the first three is 23 and that of the last three is 42.The fourth number is:
A. 40
Feedback (23 × 3 + x + 42 × 3) =235
=> x = 40
Fourth number = 40
=> x = 40
Fourth number = 40
B. 126
C. 69
D. 195
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